High-frequency three-phase system



Aug. 31, 1926.

K. W. WAGNER HIGH FREQUENCY THREE-PHASE SYSTEM Filed Jan. 13, 1926Ruenzorw type 'quency independent one from Patented Aug. 31, 1926.

UNITED STATES PATENT OFFICE,

KARI-I WILLY WAGNER, OF BEBLIN LANKWITZ, GERMANY, ASSIGNOB TO C. LORENZnx'rmnensnmscnn'r, or nmmm-rnmrnnnor,

HIGH-FREQUENCY Application Med January 18, 1926, Serial No.

ference may disappear under circumstances and a threebase current willno. more be obtained. T is may be best ascertained in connection withthree-phase current being multiplied to the triple frequency, wherebythe currents obtained are in like phase. The

present invention has for its object to overcome these inconveniences bystarting not with a three-phase current, phase current, whose two phasescan transformed into the desired higher frethe other, the currentretaining its character as a two phase current. The two-phase multipliedhigh-frequency current is then transformed into a three-phasetransformers connected in the'well known Scott-connection.

The 'single view drawingshows a system embodying the nazention. It hasfor its object to more fully explain the subject matter thereof. 1 isthe rotor of a high-frequency machine, which may be of the commonvariable-inductance 2 and 2' are the two stator windings dispiaced by 90with respect to each other. 4 and 4' are two iron-cored frequeneytransformers connected at their input si es with circuits resonant tothe fundamental frequency and consisting of stator windings 2respectively 2',

but with a two-* cndaries 11 respectively 11 be according to the welltion (see current by means of of the accompanying.

' .of said generator, output circuits of said GERMANY.

THREE-PHASE SYSTEM.

80,972, and in Germany February 23, 1925.

tively 3 and transformer windings 5 respectively 5. At their outputsides the frequency transformers contain circuits 5, 6, 7 respectively5'. 6', 7 resonant to the, desired mutipl'e frequency. K The two-phasemultiplied frequency is applied to the primaries 1O resp. 10. of twotransformers 9 respectively 9', by means of coupling coils 8respectively 8, whose seeare connected known Scott-connec- U. S.Patent622,866), a threephase current being available at terminals 1, IIand III.

\Vhat I claim is:

In a high-frequency three-phase generator system comprising incombination a twophase high-frequency generator, two fre- 'quencymultiplying transformers each having its input circuit supplied by onephase multiplying transformers transforming the fundamental frequencyinto a higherfrequency, and Scott-connected transformers fortransforming the thus obtained multiplied two-phase high-frequencycurrentinto a three-phase current.

In testimony whereof I have affixed my signature.

KARL WILLY WAGNER.

tuning condensers 3 respec-v

